net/ice/base: move VSI to VSI group

Add function to add a VSI to a given VSIG and update package with this
entry. The usual flow in XLT management would iterate through all
characteristics of the input VSI and create a new VSIG and TCAMs till a
matching characteristic is found. When a match is found the VSI is moved
into a matching VSIG and entries are collapsed, leading to added package
update calls. This function serves as an optimization if we know
beforehand that the input VSI has characteristics same as VSI configured
previously added to a VSIG. This is particularly useful for VF VSIs
which are all usually programmed with the same configurations.

Signed-off-by: Vignesh Sridhar <vignesh.sridhar@intel.com>
Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Xiaolong Ye <xiaolong.ye@intel.com>

drivers/net/ice/base/ice_flex_pipe.c

@@ -4771,6 +4771,47 @@ ice_find_prof_vsig(struct ice_hw *hw, enum ice_block blk, u64 hdl, u16 *vsig)
 	return status == ICE_SUCCESS;
 }
 
+/**
+ * ice_add_vsi_flow - add VSI flow
+ * @hw: pointer to the HW struct
+ * @blk: hardware block
+ * @vsi: input VSI
+ * @vsig: target VSIG to include the input VSI
+ *
+ * Calling this function will add the VSI to a given VSIG and
+ * update the HW tables accordingly. This call can be used to
+ * add multiple VSIs to a VSIG if we know beforehand that those
+ * VSIs have the same characteristics of the VSIG. This will
+ * save time in generating a new VSIG and TCAMs till a match is
+ * found and subsequent rollback when a matching VSIG is found.
+ */
+enum ice_status
+ice_add_vsi_flow(struct ice_hw *hw, enum ice_block blk, u16 vsi, u16 vsig)
+{
+	struct ice_chs_chg *tmp, *del;
+	struct LIST_HEAD_TYPE chg;
+	enum ice_status status;
+
+	/* if target VSIG is default the move is invalid */
+	if ((vsig & ICE_VSIG_IDX_M) == ICE_DEFAULT_VSIG)
+		return ICE_ERR_PARAM;
+
+	INIT_LIST_HEAD(&chg);
+
+	/* move VSI to the VSIG that matches */
+	status = ice_move_vsi(hw, blk, vsi, vsig, &chg);
+	/* update hardware if success */
+	if (!status)
+		status = ice_upd_prof_hw(hw, blk, &chg);
+
+	LIST_FOR_EACH_ENTRY_SAFE(del, tmp, &chg, ice_chs_chg, list_entry) {
+		LIST_DEL(&del->list_entry);
+		ice_free(hw, del);
+	}
+
+	return status;
+}
+
 /**
  * ice_add_prof_id_flow - add profile flow
  * @hw: pointer to the HW struct

drivers/net/ice/base/ice_flex_pipe.h

@@ -50,6 +50,8 @@ ice_add_prof(struct ice_hw *hw, enum ice_block blk, u64 id, u8 ptypes[],
 struct ice_prof_map *
 ice_search_prof_id(struct ice_hw *hw, enum ice_block blk, u64 id);
 enum ice_status
+ice_add_vsi_flow(struct ice_hw *hw, enum ice_block blk, u16 vsi, u16 vsig);
+enum ice_status
 ice_add_prof_id_flow(struct ice_hw *hw, enum ice_block blk, u16 vsi, u64 hdl);
 enum ice_status
 ice_rem_prof_id_flow(struct ice_hw *hw, enum ice_block blk, u16 vsi, u64 hdl);

drivers/net/ice/base/ice_flow.c

@@ -1111,6 +1111,34 @@ ice_flow_rem_prof_sync(struct ice_hw *hw, enum ice_block blk,
 	return status;
 }
 
+/**
+ * ice_flow_assoc_vsig_vsi - associate a VSI with VSIG
+ * @hw: pointer to the hardware structure
+ * @blk: classification stage
+ * @vsi_handle: software VSI handle
+ * @vsig: target VSI group
+ *
+ * Assumption: the caller has already verified that the VSI to
+ * be added has the same characteristics as the VSIG and will
+ * thereby have access to all resources added to that VSIG.
+ */
+enum ice_status
+ice_flow_assoc_vsig_vsi(struct ice_hw *hw, enum ice_block blk, u16 vsi_handle,
+			u16 vsig)
+{
+	enum ice_status status;
+
+	if (!ice_is_vsi_valid(hw, vsi_handle) || blk >= ICE_BLK_COUNT)
+		return ICE_ERR_PARAM;
+
+	ice_acquire_lock(&hw->fl_profs_locks[blk]);
+	status = ice_add_vsi_flow(hw, blk, ice_get_hw_vsi_num(hw, vsi_handle),
+				  vsig);
+	ice_release_lock(&hw->fl_profs_locks[blk]);
+
+	return status;
+}
+
 /**
  * ice_flow_assoc_prof - associate a VSI with a flow profile
  * @hw: pointer to the hardware structure

drivers/net/ice/base/ice_flow.h

@@ -317,7 +317,9 @@ ice_flow_add_prof(struct ice_hw *hw, enum ice_block blk, enum ice_flow_dir dir,
 		  struct ice_flow_prof **prof);
 enum ice_status
 ice_flow_rem_prof(struct ice_hw *hw, enum ice_block blk, u64 prof_id);
-
+enum ice_status
+ice_flow_assoc_vsig_vsi(struct ice_hw *hw, enum ice_block blk, u16 vsi_handle,
+			u16 vsig);
 enum ice_status
 ice_flow_get_hw_prof(struct ice_hw *hw, enum ice_block blk, u64 prof_id,
 		     u8 *hw_prof);